21054404

素因数分解:

$2^2\times 7^1\times {\mathrm{751943}}^1$

素因数の和:751954

約数の個数: 12

約数和(自身を含む): 42108864

約数和(自身を除く): 21054460

約数列:

[1, 2, 4, 7, 14, 28, 751943, 1503886, 3007772, 5263601, 10527202, 21054404]

約数ペア:

[(1, 21054404), (2, 10527202), (4, 5263601), (7, 3007772), (14, 1503886), (28, 751943)]